The improved Java packager would include features to align with a modular Java platform


Java modules, in the works for years and now set to debut in 2016, will involve improvements to the Java Packager, to reduce the size of the Java Runtime Environment.

In a JDK Enhancement Proposal (JEP) floated this week on an Internet bulletin board, the Java Packager tool could be integrated with features from the Project Jigsaw modularization plan. Java Packager is used to compile, package, and deploy Java applications from the command line.

“The Java Packager has always generated huge binaries when it is asked to bundle a runtime as part of its packaging due to the size of the JRE, which for some distributions is on the order of 100MB,” the proposal states. “Jigsaw will expose tools and techniques that can reduce the size of the JRE we need to package.”

The proposal stipulates that, for the most part, packager workflow will remain as is. But tools from Jigsaw will be added and replace some steps. The packager will only create applications using the JDK 9 runtime, which will simplify code paths, according to the proposal. Users who want to create a Java 8 application still can use the Java Packager that shipped with Java 8. The JEP proposal, officially numbered JEP 275, was initially developed in mid-May but was updated on Thursday, although the week's specific update was not noted in the document.





Initially proposed for inclusion in Java 8, which was released in March 2015, modularization was delayed until Java 9, due in a year. In a recent blog post, Oracle's Mark Reinhold, chief architect of the company's Java platform group, talked about the goals of a module system, which include reliable configuration and strong encapsulation, enabling scalability and improved performance.
The JEP depends entirely on Project Jigsaw. This project, the JEP proposal states, introduces the notion of module-path in addition to a classpath. “New options and configurations will be added to the packager API, Ant plugin, and CLI to allow the user to specify modules and module paths, in addition to JARs and classpaths. This may require additions to existing app-resource handling.”

This story, "Java 9 module plan picks up a packager" was originally published by InfoWorld.

Comments

Post a Comment

Popular posts from this blog

Java 10 and 10 Big Java Milestones

Java 10 and 10 Big Java Milestones Java has made tremendous strides in the past 12 months, with exciting new features and capabilities for developers of all kinds. 01: JAVA 10 DEBUTS A NEW SIX-MONTH FEATURE RELEASE MODEL Twelve busy months. Two releases, Java 9 and Java 10. What’s going on? Easy: Starting with Java 10, released in March 2018, Java has moved to a faster release cadence, with relatively smaller feature releases every six months. This is a significant change from Java’s previous model of one large release every two to three years. This accelerated schedule allows for rapid iterations of the Java platform, and the ability, for Java developers, to leverage new APIs and features faster than ever. Before JDK 10, Java’s improvements on APIs, the language, and JVM were only delivered when big features were ready—that is, every three years, more or less. That’s too slow to keep up with today’s ever-accelerating pac...
Read more

Java 21 Features With Example

Image
Exploring the Exciting New Features in Java 21: Examples and Insights Java 21 Features with Examples This article provides a comprehensive overview of the new features introduced in JDK 21, as specified by JSR 396 in the Java Community Process. From language improvements to performance optimizations, these features aim to enhance productivity, flexibility, and efficiency in Java development. Let’s dive into the details and explore the exciting advancements in JDK 21. 1. String Templates (Preview): String templates, which are scheduled to be introduced as a preview feature in JDK 21, aim to simplify the process of string formatting and manipulation in Java. This feature enables developers to incorporate expressions directly within string literals, thus facilitating the creation and formatting of intricate strings. In the following blog post, we will delve into the concept of string templates, offering practical illustrations that will assist Java developers in embracing and harnessing ...
Read more
  Want to install Windows 11? There's actually a way to download it now Windows 11  started to roll out to eligible devices last month, as Microsoft launched its new operating system on  Oct. 5 . Everyone  using Windows 10  can upgrade for free if they have a compatible computer, but a lot of people are still waiting for the opportunity.  Microsoft is rolling out the OS in phases, so your system might not prompt you to upgrade just yet -- in fact, you might not find it even if you tell your computer to check for updates. An August blog post from Microsoft said the company expects "all eligible devices to be offered the free upgrade to Windows 11 by mid-2022." Don't want to wait until next year? Read on to find out how the Windows 11 Installation Assistant is your shortcut to Windows 11. If you're not in a rush, the Windows 11 update will be pushed to your device at some point in the coming months when Microsoft's data indicates the upgra...
Read more